A New Species of \u3ci\u3eVexillata\u3c/i\u3e (Nemata: Ornithostrongylidae) from the Coarse-Haired Pocket Mouse \u3ci\u3eChaetodipus hispidus\u3c/i\u3e in New Mexico (original) (raw)
Journal of Parasitology, 2001
Individuals of a new species of Vexillata were collected from the small intestines of Liomys pictus from the Estación de Biología Chamela, in Jalisco State, Mexico. The new species shows an array of characters that allow us to recognize it as a member of Vexillata; however, it can be distinguished from other species of the genus in that males possess an asymmetrical caudal bursa, females possess a characteristic cuticular inflation at the level of the ovijector, and both sexes possess a synlophe with 9 ridges at the midbody. Additional detail of the synlophe of Vexillata armandae Gardner et al., 1994 from Chaetodipus hispidus in New Mexico shows that both sexes have 12 cuticular ridges just posterior to the cephalic inflation, and in the posterior region of the body, females have 9 ridges of equal size while males possess 11 equal-sized ridges. In both sexes, the carene disappears at the posterior end of the body.
Parasite, 2003
Two new species of Nippostrongylinae, Hassalstrongylus puntanus n. sp., and Stilestrongylus franciscanus n. sp. are described from the intestine of the grey leaf-eared mouse Graomys griseoflavus (Waterhouse, 1 837) (Sigmodontinae) from the Province of San Luis, Argentina. Hossalstrongylus puntanus n. sp. is distinguished from the most closely related species H. dollfusi (Diaz-Ungria, 1963), a parasite of Mus musculus from Venezuela by longer rays 2, shorter rays 4, proximal half of the dorsal ray non-enlarged and a non-retractile female tail. Stilestrongylus franciscanus n. sp. is distinguished from the most closely related species S. flavescens Sutton & Durette-Desset, 1991, a parasite of Oryzomys flavescens from Argentina, by rays 2 and 3 diverging separately from common trunk of rays 2 to 6, and by right ray 3 arising from this trunk more distally than ray 6. Stilestrongylus azarai Durette-Desset & Sutton, 1 985, a parasite of Akodon azarae from Buenos Aires, Argentina, was also found parasitizing G. griseoflavus, representing new host and locality records. Some additional morphological data for this species are also provided.
Annales de Parasitologie Humaine et Comparée, 1984
NEMATODA : TRICHOSTRONGYLOIDEA PARASITES OF VENEZUELAN WILD MAMMALS. III. The genus Vexillata Travassos, 1937 R. GUERRERO* SUMMARY. Two new species of the genus Vexillata Travassos, 1937 parasitizing Heteromys anomalus of Venezuela are described, V. tejerai n. sp. and V. scorzai n. sp., both close to V. petteri Durette-Desset, 1970 and V. chabaudi Yoyotte-Vado, 1972, by possessing of 4 dorsal ridges and the dorsal rib divided near the tip. Both new species are differentiated from V. chabaudi by having the dorsal rib much shorter than rib 8 ; they are distinguished from V. petteri by having ribs 2 and 3 nearly the same size. The two new species are separated by the significantly greater size of V. tejerai and by the form of the copulatory bursa. A brief historical review of the genus is given, together with considerations on its origin and its probable relation to the Pudicinae or Brevistriatinae. A key to the 8 known species is also given. Nematoda : Trichostrongyloidea parasites de Mammifères sauvages du Vene zuela. III. Le genre Vexillata Travassos, 1937 RÉSUMÉ. Description de deux nouvelles espèces du genre Vexillata Travassos, 1937 : V. teje rai n. sp. et V. scorzai n. sp. parasites à'Heteromys anomalus du Vénézuéla. Toutes deux sont proches de V. petteri Durette-Desset, 1970 et V. chabaudi Yoyotte-Vado, 1972, avec 4 arêtes dorsales et une côte dorsale divisée à l'apex. Elles se différencient de V. chabaudi par une côte dorsale beaucoup plus courte que la côte 8 et de V. petteri par des côtes 2 et 3 de longueur équi valente. V. tejerai n. sp. se différencie de V. scorzai n. sp. par sa taille plus élevée de façon significative et par la forme de la bourse caudale.-Bref historique des différentes espèces du genre, origine possible et relations probables avec les Pudicinae-Brevistriatinae.-Une clé dichotomique des 8 espèces connues est donnée.
Latin American Journal of Aquatic Research
Nematodes are among the most common parasites in aquatic mammals. Because of their cuticular covering, these worms are frequently collected from the examination of feces or stranded hosts. This work provides new records of three nematode taxa infecting three different aquatic mammal species (Lontra longicaudis annectens, Trichechus manatus, and Zalophus californianus) in Mexico. Additionally, it brings together all available published records about this country's nematode fauna parasitizing aquatic mammals. The aim is to describe the current state of the art, which sets the basis for the strategic design of future research. Given the diversity of printed sources recording nematode fauna, we gathered literature, including theses and articles in journals profiled in the Journal Citation Reports or similar academic databases. The compiled information shows that 24 nominal nematode taxa have been reported from 11 species of aquatic mammals in Mexico. Our study exhibits irregular pat...
Systematic Parasitology, 2007
The systematic position of two nippostrongyline nematodes described from Argentinean sigmodontine rodents is clarified. The first species, Hassalstrongylus multiovatus Suriano & Navone, 1992, parasitic in Akodon simulator Thomas from the province of Tucumá n, was studied on the basis of type and voucher material. H. multiovatus is proposed as a junior synonym of Trichofreitasia lenti Sutton & Durette-Desset, 1991, a parasite described from Oligoryzomys flavescens (Waterhouse) in the province of Buenos Aires. The holotype and three of seven paratypes deposited as H. multiovatus were identified as T. lenti. One male paratype was identified as Guerrerostrongylus uruguayensis Sutton & Durette-Desset, 1991, a parasite described from O. flavescens in Uruguay. Three female paratypes were identified as Guerrerostrongylus sp. The second species, Stilestrongylus scapteromys Suriano & Navone, 1996, parasitic in Scapteromys aquaticus Thomas from the province of Buenos Aires, was studied on voucher material. Stilestrongylus scapteromys and Malvinema frederici Digiani, Sutton & Durette-Desset, 2003, the type-species of Malvinema Digiani, Sutton & Durette-Desset, 2003, were described from the same host and geographical region. As they are considered to refer to one and the same taxon, the new combination Malvinema scapteromys n. comb. is proposed for this species.
Parasite, 2021
Hassalstrongylus dollfusi (Díaz-Ungría, 1963) Durette-Desset, 1971 was described in a wild house mouse, Mus musculus, from Venezuela and, since then, has never been reported again in the type host or in any other host. In this work, specimens assignable to H. dollfusi were found at 10 localities in Northeast Argentina, in five species of sigmodontine rodents. The nematodes were attributed to H. dollfusi based on diagnostic characters such as: synlophe with 22–31 subequal ridges; in males, hypertrophy of right ray 4 of the male bursa, thickening of the dorsal ray and bases of rays 8, distal tip of the spicules bent and spoon shaped; and, in females, presence of subventral postvulvar alae supported by hypertrophied struts. The new host recorded are: Oligoryzomys fornesi, O. flavescens, O. nigripes, Holochilus chacarius and Akodon azarae. The parasite showed a strong preference for host species of Oligoryzomys, which appear to act as primary hosts. The parasite could be present, parasi...
Zootaxa, 2016
A new genus and species of Viannaiidae (Trichostrongylina, Heligmosomoidea), Ischilinema baldoi n. gen. et sp. is described parasitizing two species of tuco-tucos, Ctenomys bergi and Ctenomys rosendopascuali (Rodentia, Hystricomorpha, Ctenomyidae) from Córdoba province, Central Argentina. No helminths were previously known from these two host species. The new genus is defined by the following characters: synlophe with 15 continuous ridges subequal in size, presence of left cuticular dilatation, a gap between ridges 1' and 2', bursa asymmetrical with dorsal ray hypertrophied and displaced to the right, and spicules not twisted. This is the first record of Viannaiidae from the Ctenomyidae, enlarging the host range of these parasites to five out of the 12 extant families of caviomorphs.